Nature"The Loneliest Animals"
Scientists work feverishly to breed some of the world's most endangered species in high-security high-tech labs and investigate what forces have led to the demise of entire species. Featured animals include Yangtze turtles, a baby Sumatran rhino, a special collection of lemurs, the Spix's macaw, and a giant tortoise from the Galapagos, the last known specimen of his kind.G

2:00 am

Alan Alda in Scientific American Frontiers"Mysteries of the Deep"
Pioneering submarine crews explore the ill-fated Confederate secret weapon, Hunley, which carried out the first successful submarine attack. Alda peeks into the deep-diving watercraft, Alvin, which found the Titanic and discovered life in the deep ocean.G

3:00 am

NASA Sci Files"The Case of the Prize-Winning Plants"
The tree house detectives' green thumbs are tested as they attempt to grow award-winning plants for the upcoming fair. The tree house becomes a green house as the detectives experiment with soil, light, plant life cycles, and genetics to grow the perfect plant.G

Democracy In America"Media: Inside Story"
This program explores the media as an integral part of American democracy, highlighting the scrutiny they impose on the performance of public officials, the interdependence of politics and the media, and the power the media wields in selecting the news. D

Clifford The Big Red Dog"Little Clifford/Welcome to Birdwell Island"
Little Clifford - In this flashback story, we learn how Emily and Clifford got together and how Emily's unconditional love changed the "runt" of the litter into the biggest dog around! Welcome To Birdwell Island - This flashback episode tells the story ofthe day the Howards moved to Birdwell Island. The town is full of preconceived ideas about how "a big dog can mean big problems" for the island, but they soon learn that Clifford has much to offer, and that they shouldn't make assumptions before they know the facts. D

7:00 am

Arthur"Sue Ellen Gets Her Goose Cooked/Best of the Nest"
Sue Ellen is the champion of the popular Internet game, Virtualgoose.com. She becomes so obsessed, however, that she starts imagining her friends as geese to be conquered! Can Sue Ellen give up Virtualgoose before she finally quacks. D

7:30 am

Martha Speaks"Martha's Chair/TD The Pack Rat"
Martha's Chair - Martha's family has a birthday surprise - a new dog bed! After a few sleepless nights, the family realizes that Martha misses her stinky old chair. But Mrs. Demson bought it and has plans of her own for the chair after she sees one just like it on Antiques Roadshow. Vocabulary: (E) antique, donate(d), upholstery, profit(ed), valuable. D

8:00 am

Curious George"Curious George and the Dam Builders/Curious George's Low High Score"
George helps a family of beavers and builds his own mini-golf course so he can practice.G

8:30 am

Cat in the Hat Knows A Lot About That!"Chasing Rainbows/Follow The Prints"
The kids are painting a picture of a rainbow but can't remember all the colors to use. Luckily for them, Cat takes them to Color-ga-lore to meet King Kaleidoscope, an expert on rainbows! Nick and Sally are enjoying a backyard picnic when they discover their last strawberry has gone missing! Who could have taken it? Cat's friend Cluey Looey can help them!G

9:00 am

Super Why!"Bedtime for Bear"
Baby Joy is afraid of the dark! To show her there's nothing to fear, Super Why and his literacy friends fly into Bedtime for Bear and meet Charlie - a bear who is scared of just about everything! The super readers shed a little light on the problem (literally) while Charlie discovers a bit more about the world outside his cozy cave. Educational Objectives: To experience a familiar bedtime routine. Preschoolers will practice the alphabet, rhyme with AR words, learn what the word "fireflies" means, and use the power to read to change the story. D

9:30 am

Dinosaur Train"Dome-Headed Dinosaur/Treasure Hunt"
The Pteranodon kids and their dome-headed friend Spikey Stygimoloch meet a brother and sister, Patrick and Pamela Pachycephalosaurus, two dinosaurs with enormous dome heads. Spikey bonds with the Pachycephalosaurus. Patrick and Pamela are athletes who invite our kids, Mom, and Spikey along to watch them use their impressive dome heads to play a volleyball type sport called, Dome Ball. D

10:00 am

Sesame Street"Afraid of the Bark"
Elmo and Zoe are playing a game with Zoe's pet rock, Rocco. When it's Elmo's turn to roll Rocco, he rolls him all the way to Barkley the dog, who picks him up and plays with him in his mouth. Bob gives Rocco back to Zoe and explains that Barkley just thought they were playing fetch. D

11:00 am

Daniel Tiger's Neighborhood"Daniel Plays Ball/O Builds A Tower"
Daniel Plays Ball - Daniel, Miss Elaina and Prince Wednesday are at the park with Prince Tuesday. They decide to play a game with a ball. Daniel struggles to catch the ball and gets very frustrated. D

11:30 am

Sid The Science Kid"Rock & Roll Easter!"
It's springtime and that means it's time to hunt for Easter eggs in the backyard. Explorer Sid searches under every bush and behind every tree, and he finds all the eggs Mom and Dad have hidden. But wait, he also found. D

12:00 pm

WordWorld"Think in the Rink/X Marks The Spot"
Think in the Rink - Duck and Dog want to join Sheep and Frog in their ice skating show. Although Frog warns Duck and Dog to be careful as they practice, the enthusiastic duo gets carried away and carelessly break the ice skating rink. Will Duck and Dog think up a good solution to the problem before the show begins? X Marks the Spot - Duck must search high and low for his letter X that has gone missing. D

12:30 pm

Caillou"Caillou Tells The Truth"
Olive Muddle: Grandma brings over some delicious treats for the kids to try - only they're full of olives. Caillou doesn't like olives, but he doesn't know how to tell Grandma he doesn't like her cherished dishes.until. D

1:00 pm

Barney & Friends"Way to Go! A Travel Adventure"
Inspired by Daniel's trip the next day, Baby Bop wants to go on a trip of her own! With the help of Barney, and their imaginations, Baby Bop, Riff, and the kids have fun exploring all types of travel using cardboard boxes. Their grand finale ends up being on a cardboard cruise ship sailing "over the ocean blue.". D

1:30 pm

Thomas & Friends"Helping Hands"
Toby is fitted with a brand new three chime whistle while his little bell is repaired. Toby finds this new whistle a bit daunting. So instead, Toby comes up with a plan. D

2:00 pm

Curious George"Curious George and the Dam Builders/Curious George's Low High Score"
George helps a family of beavers and builds his own mini-golf course so he can practice.G

2:30 pm

Martha Speaks"Martha's Chair/TD The Pack Rat"
Martha's Chair - Martha's family has a birthday surprise - a new dog bed! After a few sleepless nights, the family realizes that Martha misses her stinky old chair. But Mrs. Demson bought it and has plans of her own for the chair after she sees one just like it on Antiques Roadshow. Vocabulary: (E) antique, donate(d), upholstery, profit(ed), valuable. D

3:00 pm

The Electric Company"A Fistful of Confetti"
It's Neighborhood Record Day, and everyone in town is trying to break silly records. Francine and Jessica are both trying to break the same record - filming the most broken records on record day. When Francine tries to get in Jessica's way by giving her fake tips, The Electric Company works together to lead Jessica to victory. D

3:30 pm

WordGirl"Day at the Museum/Best Fan Club Meeting Ever"
DAY AT THE MUSEUM - Scoops takes Becky, Bob, and Violet to the museum to find inspiration for his news story for The Big City Times. When they hear a rumor about a haunted treasure, the team goes on a search - with The Butcher right behind! Can Scoops, Becky, Bob, and Violet find the treasure, evade The Butcher, and do it all in time for Scoops to keep his deadline? Vocabulary Words: Rumor, Deadline. BEST FAN CLUB MEETING EVER - TJ plans a meeting to divulge a secret about WordGirl to International WordGirl Fan Club members. D

4:00 pm

Wild Kratts"Kickin' It with the Roos"
When Chris and Martin meet up with a mob of Red kangaroos, they get their car keys stolen by a joey and have to figure out how to get them back from the tricky little guy. As they jump into the life of the roos to search for the missing keys, the brothers realize that animals live in different kinds of social groups and they have important behaviors that keep the group together and safe. But everybody wonders just how safe this search has become, when Chris and Martin get tangled up in a kickboxing match with the dominant male and caught in the middle of a dingo attack. D

4:30 pm

Cyberchase"The Emperor Has Snow Clothes"
Hacker has crowned himself Emperor of Penguia and deposited the real emperor as a frozen statue in a distant corner of the site. The CyberSquad arrives just as a crippling snowstorm makes its way across Penguia in a path that seems destined to collide with their rescue. Digit uses updates on the storm's progress from cyberweathercaster Stormy Gale (Janice Huff) to help the kids track the storm. D

5:00 pm

Fetch! With Ruff Ruffman"What's Bugging Ruff"
Noel, Sammy and Jay are dispatched to Thompson Island where they learn about insects and their habitats while Harsha learns about powwows in New Mexico. D

5:30 pm

Nightly Business Report
Tonight on Nightly Business Report, housing prices have risen the most since the bubble burst. What lies ahead? NBR will ask Robert Shiller, co-founder of the Case-Shiller index, which tracks home prices nationwide. And, a look at why, now more than ever, there's a big push to teach kids in school about money and finance. D

John D. Rockefeller: American Experience
John D. Rockefeller Jr. dedicates his life to recasting the family image, which for decades is associated with his father's feared monopoly, Standard Oil, and predatory business practices. As the elder Rockefeller's only son, he dedicates his life to recasting the family image, giving away hundreds of millions of dollars and insisting his six children behave impeccably. He leaves an invaluable inheritance: a name that stood for "the well-being of mankind."G